Re: Not able to change Dimension of line using 'smart dimensions'

Do you have Maintain Relationships enabled or disabled? It is in the Relate command group. Last column top button. If this is disabled, new dimensions placed will be driven. By the way the green color means exactly that, the dimension does not drive the geometry, therefore it is a driven by the geometry it is connected to.

There are other ways to get driven dimensions. With maintain relationships enabled, place a line and then a dimension on the line. Then place another dimension on the line. The first will be black and will be a driving dimension. The second is green and is a driven dimension. Both dimensions cannot drive the geometry. This would be an over constrained condition and is disallowed.

Re: Not able to change Dimension of line using 'smart dimensions'

I have attached an updated draft file. The dimensions are now driving. The following are the steps I used to fix the geometry.

1. Deleted the Rigid Set Constraint.

2. The second and third lines from the bottom are not connected. There is a gap between them. Add a connect relationship between the lines choosing the end point of the third line first followed by the end point of the second line.

3. Select the lines and add the Rigid Set Constraint again.

4. Select the dimensions one at a time and click the lock to make them driving dimensions.

Without further analysis, I don't know why the gap mattered within the Rigid Set. But this fixes the issue.

Re: Not able to change Dimension of line using 'smart dimensions'

I don't know what I did to remove the Rigid Set constraint just before saving. I was working with Undo/Redo and must have removed that constraint. I atached an example where I created the constraint first then the dimensons. I did notice that the dimensions display as driven until you click to place them. then they will be driving. So in the example attached, the Rigid Set constraint was placed first followed by the dimensions.